关键词：二次压缩机；填料盘；开裂；微动磨损；微动疲劳 [gap=914]Keywords： secondary compressor； packing cup； crack； fretting wear； fretting fatigue
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制冷系统室内空气热交换器由预热交换器和二次热交换器组成，消除了压缩机可能存在的湿压缩。
Indoor air heat exchanger is made up of preheat exchanger and secondary heat exchanger, and removed wet compression for compressor.
本文提出采用“圆台二次包络啮合副”作为单螺杆压缩机啮合副的型线。
This lubrication film is easily established with "straight line enveloping screw pair" rotors, but this kind of engagement pair is very difficult to machine.
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